Results 181 to 190 of about 131,649 (218)
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Cosmogenic dating of fluvial terraces, Fremont River, Utah
Earth and Planetary Science Letters, 1997Absolute dating of river terraces can yield long-term incision rates, clarify the role of climate in setting times of aggradation and incision, and establish the rates of pedogenic processes. While surface exposure dating using cosmogenic 10Be and 26Al would seem to be an ideal dating method, the surfaces are composed of individual clasts, each with ...
James L Repka +2 more
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Relict fluvial terraces on the Tsondab Flats, Namibia
Journal of Arid Environments, 1979Within the hyper-arid central dune Namib, the dune-free Tsondab Flats, extending 40 km west from Tsondab Vlei, are characterized by terraced topography incised into a conglomerate-capped red sandstone. The hypothesis is posed that the terraces are fluvial in origin and that they preserve a record of fluvial incision and arid interruption.
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Acta Geologica Sinica, 2010
Abstract:The Huang Shui River, a main tributary of the Yellow River, crosses a series of tectonically subsided and uplifted areas that show different patterns of terrace formation. The distribution of fluvial terrace of the Huang Shui River is studied through topographic and sedimentologic terrace mapping.
Jef Vandenberghe, Huayu Lu, Xianyan Wang
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Abstract:The Huang Shui River, a main tributary of the Yellow River, crosses a series of tectonically subsided and uplifted areas that show different patterns of terrace formation. The distribution of fluvial terrace of the Huang Shui River is studied through topographic and sedimentologic terrace mapping.
Jef Vandenberghe, Huayu Lu, Xianyan Wang
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Geomorphology, 2000
Palaeohydrological studies indicate that the use of sedimentary palaeoclimatic indicators in fluvial sediments still requires rigorous calibration of the climatic controls on the formation of those indicators. An explorative attempt is made using a simulation experiment with the FLUVER2 model.
Veldkamp, A., van Dijke, J.J.
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Palaeohydrological studies indicate that the use of sedimentary palaeoclimatic indicators in fluvial sediments still requires rigorous calibration of the climatic controls on the formation of those indicators. An explorative attempt is made using a simulation experiment with the FLUVER2 model.
Veldkamp, A., van Dijke, J.J.
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Ultramafic Aridisols on a sequence of fluvial terraces in Baja California
Geoderma Regional, 2019Abstract Practically all arid ultramafic soils in North America are in Baja California. An arid watershed in Baja California was found to have terraces with soil parent materials dominated by serpentinized peridotite. The soils on a sequence of four fluvial surfaces in the watershed were studied in order to trace the path of serpentine soil ...
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The impact of river capture on fluvial terraces and bedrock incision
Earth Surface Processes and LandformsAbstractRiver terraces are commonly used to infer climate and tectonic histories. Yet, it is increasingly recognised that other processes, such as river capture, can affect river terrace genesis and incision rates and patterns. In this study, we conduct a field‐based investigation of river terrace sequences along the Kolokithas and Varitis Rivers in ...
Sean F. Gallen, Karl W. Wegmann
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Dating fluvial terraces with and profiles: application to the Wind River, Wyoming
Geomorphology, 1999Abstract Fluvial strath terraces provide a record of river incision and the timing of climatic perturbations to the fluvial system. Dating depositional surfaces like terraces that are older than the range of 14 C , however, is difficult. We employ a cosmogenic radionuclide (CRN) profile technique that addresses a major problem of CRN dating
Gregory S. Hancock +3 more
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An Ipswichian fluvial deposit at Fulbeck, Lincolnshire and the chronology of the Trent terraces
Journal of Quaternary Science, 1988AbstractMammalian fossils recently discovered near Fulbeck in Lincolnshire, include abundant hippopotamus, suggesting an Ipswichian date for the Fulbeck Sand and Gravel (new name). These deposits mark a former course of the River Witham; clasts indicate derivation from outcrops of Jurassic rocks and chalky till to the south and south‐east.
Allan Brandon, Michael G. Sumbler
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Fluvial cut-and-fill terraces record climate oscillations
2020Using a model of long-term fluvial erosion and sediment transport (Yuan et al., 2019, JGR-SE), we demonstrate and quantify a direct, physical explanation for the relationship between climate oscillations and the formation of fluvial cut-and-fill terraces.
Xiaoping, Yuan +4 more
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